Vise.



No. 843,295. PATENTED FEB. 5, 1907.

3 T.0STERBERG. VISE APPLICATION FILED APR.3. 1906.

asses.-

UNITED STATE S PATENT OFFICE.

VlSE.

Specification of Letters Patent.

Patented Feb. 5, 1907.

Application filed April 3, 1905. Serial No. 253,470.

To ztZZ whom it may concern:

Be it known that I, TnEonoR Os'rnnnnno, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Vises, of which the following is a specification.

My invention relates to improvements in Vises or work-holders in which two aws, plates, or other elements can be adjusted relatively to clamp or release the work-piece or object on which the vise is used.

The especial object of my improvements is to produce a quickly-acting vise and one in which the holding power will be firm and unyielding.

In carrying out the object stated I have invented the vise the principles of which are illustrated in a preferred form in the accompanying drawings, which form a part of this application, in which Figure 1 is a view in elevation of the assembled operative parts of my invention Fig. 2 is a vertical section on line 2 2 of Fig. 1. Fig. 3 is a perspective view of a sleeve which forms an important element of my i nvention. Fig. 4 is an elevation of a shaftblock which is an element of my invention. Fig. 5 is a cross-section through the shaft. Fig. 6 is a face view of the shaft-engaging socket.

Referring to the details of the drawings, E represents what for convenience will be herein termed the movable member of a clamp, and F the fixed member, and same may be of any size, shape, or material. Secured to the outer face of the member E by a flanged ring a" and suitable screws passing therethrough into the member E is a flanged cylindrical shell A, formed with a knob extension a, through which is arranged a leverhandle a adapted for use in the usual manner. Horizontal grooves a are formed in the inner walls of the shell, which are adapted to receive the beveled ribs 0 on the outer walls of a cylindrical sleeve C, so that when the shell is turned on its horizontal axis a like movement will be communicated to the sleeve. In addition to the longitudinal ribs 0 the sleeve (7 is provided with spiral or helical grooves or slots 0 which are formed therein at opposite sides and incline in opposite directions, as shown in Fig. 3.

Loosely fitting within the sleeve C is a cylindrical block B, which is -fixed on or made a part of the shaft 1). From opposite sides of I the block project lugs I), which are adapted i to loosely engage the respective grooves or slots 0 in the shell and to cause a limited longitudinal movement of the block due to the turning of the shell.

The shaft 1) has a major diameter and a minor diameter in cross-section, and on its major diameter are out two diametricallyopposed longitudinal rows of male segmental tl'ireads b" which when the operating-shaft is turned are adapted to engage or disengage corresponding female threads formed in the opposite walls of the socket D, 'said threads beingindicated by dotted lines in Figs. 1 and 6.

The socket D is cylindrical, is formed with a face-plateor extension (I, by which with element F. The bore of the socket has in cross-section major and minor diameters, the former being non-threaded and such-as to permit the free longitudinal movement of the shaft when the latter is turned, so that its major diameter corresponds with the cor responding diameter of the socket; but when the shaft is turned so that its threads b en gage the female threads of the socket the shaft will be locked against further rotation, it being understood that the cross-diameter of the threaded portion of the socket is slightly less than the long diameter of the threaded portion of the shaft.

A. vise constructed as above described will operate in the following manner: The object to be clamped will be placed between the holding elements E F in the desired position. The shaft will be turned by the operator in position so that it will slide freely through the socket until the element E abuts against the object to be clamped. Then the lever a will be partiallyrotated orgiven a quarterturn, which will effect a corresponding movement in the shell A, which in turn will be communicated to the sleeve C, and the latter, through the engagement between the grooves c and lugs b, will give a limited forward and rotatory movement to the block B and the shaft b", which is integral with the block, and the shaft will be locked in the socket by the inter-engagement of the threads b with the female threads of the socket, as we have seen, thus holding the movable element or jaw E firmly clamped against the object placed between it and the fixed aw F.

It will be understood that the angle of inclination of the grooves relative to the lugs will be such that any back pressure in a longisuitable screws it is attached to the fixed tudinal plane will be insufficient to rotate the sleeve, and thus impair the clamping action.

It will also be understood that the back pressure resulting from the clamping action being in a direct horizontal line, it will be in sufficient to overcome the friction between the shell A, the sleeve C, and the head B, and I the grip of the engaged teeth on the shaft and in the socket, all of which must be overcome before the clamping action can be released. The shell A being rotatably mounted on the jaw E and having its flange engaging the ring a the forward and backward movements of the shell resulting from turning the lever-handle a will be communicated to the jaw E.

It will also be apparent that except for convenience in manufacture the grooves 0 could as well be out in the inner walls of the shell A, as in the sleeve C. hile I have herein referred to the element F as fixed it will be apparent that in some adaptations of my invention both elements E and F may be relatively movable toward or away from each other.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

In a vise, two clamping-jaws, a socket nonrotatably secured to one of said jaws and having a major diameter and a minor crossdiameter, the walls at its minor diameter being threaded, a shaft having threaded portions adapted when partially rotated to engage the threaded portions of said socket and thereby lock the shaft against rotation, a shell rotatably mounted on the other aw and adapted to move it longitudinally of the shaft, means for rotating said shell, and means substantially as described whereby the rotation of the shell will simultaneously partially rotate said shaft and move it longitudinally.

In testimony whereof I affix my signature in presence of two witnesses.

THEODOR OSTERBERG.

Witnesses OSCAR WV. LINDORFF, WM. B. Moorua 

